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Article
ISO-SWS Spectra of AGB Stars
In this contribution, we present a few highlights of the guaranteed time program to observe AGB stars with differing chemical compositions and mass loss rates using ISO1 SWS. We briefly discuss C2H2 absorption in...
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Article
Circumstellar Silicate Mineralogy
This paper reviews spectra obtained with the SWS on board of ISO of dust shells around O-rich objects. These spectra reveal the presence of many new emission features between 10 and 45 µm. These bands are gene...
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Article
Spectroscopic Study of Carbon Stars with the ISO-SWS
We have observed ten carbon stars with different mass-loss rates using the Short Wavelength Spectrometer (SWS) on board ISO. We found that not only the spectral energy distribution and the dust features, but t...
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Article
Observations of high co rotational lines in post-AGBs and PN
We present a preliminary interpretation of high CO rotational line data obtained from KAO. The possibility of either a PDR or a shock model is considered in order to explain the observations.
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Article
The onset of axial symmetry in protoplanetary nebulae
We have obtained resolved IR images, at wavelengths from 1.2µm to 12.5µm, of a small sample of protoplanetary nebulae. The results suggest that all PPNe are axially, not spherically, symmetric, that spherical sym...